A form of "sandwich" obtained from the Cock Buffet, which could include many toppings and sides such as, assorted nuts, cock, oil, vinegar, whip cream, honey, etc.
Excuse me sir, can you direct me to the cock buffet. I have a craving for a manwich this evening.
A sandwich prepared by a woman (ie. the way it should be). This sandwich is then consumed by a male, therefore making him feel like the man he deserves to be.
Woman: "Want a sandwich, honey?"
Man: "Only if you make it! I need a damn good manwich right now!"